Hey guys,
The car is in desperate need of servicing!
Got all the things to do it, so after doing everything pre-oil change i jacked her up, put her on axle stands and got under, only to find who ever last did the oil change decided to be clever and round off the hex nut, so my spanners went straight out the window, borrowed some mole grips from a friend and that just made it worse to be honest, so not only is the oil sump plug/bolt on MEGA tight but its also rounded off
Any idea's that don't involve taking the whole sump off and replacing it?

looked online at halfords and this tool i need is £5 so ill get that and HOPEFULLY that will get it off and ill stick a hole new sump plug and gasket on it.
Lets just say this tool doesn't work what could i do then? lol

If it were ment to be the sole way to undo it then there would be the 24mm option. It's be like a polo with the Allen key.

The 24mm is always going to be the best option IMHO.
And doing it daily as a job I know how the square plug can be a pain.

This has intrigued me a bit. Firstly because there is obviously the 24mm option as well. If that was the sole way to undo it, why would there be the 8mm square plug (on that note I can only presume you meant to say "wouldn't", instead of "would" in your first sentence).

Secondly, I am pretty interested to see why the square plug would be a pain. I have always used this method so if there is some reason as to why it isn't as good I'd be genuinely interested. To me it has always seemed a lot more fool proof and I have used it every time. Lots less chance of rounding it off etc.

Well i tried to get the plug using the hex nut and NOT the square plug hole at first which failed miserably! ended up with a complete rounded off nut, went halfords and bought an 8mm square plug tool for £5 and will alot of strength (was on VERY tight) i got the sucker off so im made up now, thanks guys!

Well i tried to get the plug using the hex nut and NOT the square plug hole at first which failed miserably! ended up with a complete rounded off nut, went halfords and bought an 8mm square plug tool for £5 and will alot of strength (was on VERY tight) i got the sucker off so im made up now, thanks guys!

Just for future referance run the engine up till its hot,switch off then undo the sump plug.Expansion will help to get the plug off.

This has intrigued me a bit. Firstly because there is obviously the 24mm option as well. If that was the sole way to undo it, why would there be the 8mm square plug (on that note I can only presume you meant to say "wouldn't", instead of "would" in your first sentence).

Secondly, I am pretty interested to see why the square plug would be a pain. I have always used this method so if there is some reason as to why it isn't as good I'd be genuinely interested. To me it has always seemed a lot more fool proof and I have used it every time. Lots less chance of rounding it off etc.

plus the fact the same plug size is used for the gearbox fill/drain as they're round bolts. last time i tried to use a 24 to get the sump plug off i hit myself in the face as it rounded straight off